Container



Oct. 18, .1932. F. MEIER 1,883,390

CONTAINER Filed May 11, 1951 Patented Oct. 18, 1932 FREDERIG MEIER, OF CHICAGO, ILLINOIS I CONTAINER Application. filed May 11,

This invention relates to containers, and

particularly to containers in which are enclosed heavy liquids, such as oils, paints and the like. By containers I refer to any ordinary liquid container, such as metallic cans, pails, or the like, and for convenience will refer to them herein merely as cans. It is common to enclose linseed oils, paints and the like in cans which have removable friction tops, and particularly tops which are known by the trade as doubleor tripple-tight. These tops may be conveniently removed by the user of the goods and can be replaced readily, and at all times will be sufficiently tight to preor paints are packed in this manner, it occasionally happens that, because of increase in temperature, there will be a tendency for some air to be forced out of the cans and then air is forced inwardly as the temperature decreases. This is what is known in the trade as breathing of the containers. In this manner, the enclosed substance may be more or less injured. The air that enters, although in very small quantities, causes some oxidation that is objectionable.

One of the objects of my invention is to hermetically seal the cans so that this breathing process is entirely eliminated but, at the same time, I provide means which may be very conveniently opened by the user of the goods. In connection with this, I have found it desirable, for reasons hereinafter given, to provide means for testing the cans after the hermetical sealing, and for filling the cans, for protecting the sealing means from injury, and also for rescaling the cans after they have been opened, so that the leakage is substan-v tially eliminated. The initial hermetical tents, and as it is unsealed only when the contents are to be used in a relatively short time,

the resealing, although not altogether hermetical, is sufiicient for the temporary purpose.

The accompanying drawing is a central sectional elevation of a can which has sealing and protecting means attached thereto which embodies the features of my invention.

vent any leakage of the goods. But when oils sealing of the can permits the storing thereof for unlimited time without injury to the con-' 1931. Serial (no. 536,468.

- can but more; particularlyto large canswh-ich The invention is applicable; to' any type of are to contain heavy oils, paints and the like. 7

The can illustrated 7 comprises the ordinary body 2 which has what! is'called a double tightannular rim 3 on its upper end, with'an =opening4 inthe central portion thereof. this openinggI-insert'a closure 5w-hichsmay =be of any suitablematerial, either-fibrous or metallic. Lprefer'for the'purpose to use a unetal closurewhich is relatively thinyso that it may be very readily punctured and" cut .by

. anordinary-knife... The'ed-ge 10f this-closure iis' hermetically sealedto the rim in any suitable manner, suchfas by hemming, bumping, soldering, welding or gluing. I vprefer to connect the edges of the container 1 with the rim by hemming as indicated,'and--then sweat- -ing solder in'the joint,.so-as toinsure'her- .meticalsealing. r With the can so.sealed, if the closure is 5' sufficiently thin, the user of r the goods K may very readily cut .or tear;-the closure out-in any ordinary manner. But to provide a closurew-h-ich can be thus operated onreadily,

it must be;protected when empty'againsti-nj-uryby handling or otherwise,-andals oit must be strengthened in. order to, prevent the heavy material from bursting open the closure when the can is full-and may be roughly 5.-

:handled. For this protection, :Iprovide a s top for the can t which is-suitably formed, :so that it may beconven-iently forced on the 1 rim of the can iand held. thereon 'by. friction.

. For this purpose, I prefer the top 6-which has al laannularq loop? which coacts with the loop 8 of the rim, so astoproducea friction-tight connection between the two elements. When this top is forced in place, it protects the top isremoved in an ordinary manner by? prying upwardly" the edges thereof, andthe closure'5'is cut or torn-out inany suitable "manner -and so much ofthemateriakcontained in the cana's may 'be' de'siredis used.

The can may then be substantially hermetid "closure'5 from any injury from'theoutside sea cally sealed by forcing on the top in an ordi nary manner.

In order to hermetically seal the container in this manner, however, I have found it desirable to test the sealing of the closure to determine Whether there is any leakage whatever of air under pressure. For this purpose, I prefer to provide'an opening 9 in the bottom of the can and, by suitable means, so much interior air pressure as may be desired is. provided, in order to test for leakage;

This opening also is used for filling the can with the material. The opening is then sealed up in an ordinary manner.

The opening in the bottom is desirable for testing and filling, for the reason that to form an opening in the closure 5 would so weaken the thin material of which the closure is made as to make it difficult to properly test and seal the opening. But, with the opening in the bottom, which is of relatively much heavier material, there is no danger of injury, and the opening may be readily closed by soldering thereon an ordinary cap 10, and the testing is materially simplified by having the opening in the bottom instead of in the top which is to be tested.

The opening in the bottom, however, may be formed by leaving oil the entire bottom, as is customary with cans in the packing industry, and as called by the trade open top cans.

After the cans are filled, the one-piece bottom is then hermetically sealed onto the can body.

This process may be used with smaller packages. With larger packages, preferably an opening 9 is used.

This method of sealing cans full of liquids permits their being transported by mail, and provides against rough handling. The doubleor triple-tight connection of the top is necessary in order to prevent the top being forced off by material pressure outwardly on one side of the top, and also to reduce breathing to a minimumafter the closure is removed.

It sometimes happens that, because of jarring, variations in temperature, or'the like, the thin metal of the closure 5 becomes fatigued and tends to crack adj acent the connec- 'method which I have provided allows the goods to be packed under a partial vacuum, for example by means of the ordinary mechanical vacuum process, as leakage of the air into the cans when sealed is entirely avoided. c V I This loop yields.

hand.

FREDERIO MEIER. 

